One of my OPA541AP short without knowing why

[5150ed]

One of my OPA541AP short without knowing what is the reason.

I am using 100mf Blackgate N with 1000mf Balckgate Standard and haveing very wonderful result however, I want to try only 100mf Blackgate N which is said to have best mid and high frequency.

So I remove the 1000mf standard, without touching any others parts at all.

But when I turn on my amp there is a lound noise from one of my speaker and noise from the other side.

So I check both chanel, nothing wrong. I did try again, same thing happen.

Then I connect the 1000mf standard back but one of my chip is short resulted in 29V DC offset at the speaker terminal. .

The worst thing is I still do not know why???

 

[Nordic]

My guess was it formed part of an RC network, and you basicaly changed the cutoff frequency for your amp to the point where it made the chip oscillate to death.

 

[100db]

My friend, you may still lucky enough.
Check your grounding, power and signal ground may loosen or separate when you remove the BG 😀

I've a similar symptom when I forgot to connect power gnd. to signal gnd. 😉